package content

import (
	"fmt"
	"strings"

	"github.com/yaoapp/gou/connector/openai"
	agentContext "github.com/yaoapp/yao/agent/context"
)

// ExcelHandler handles Microsoft Excel spreadsheets
type ExcelHandler struct{}

// CanHandle checks if this handler can handle the content type
func (h *ExcelHandler) CanHandle(contentType string, fileType FileType) bool {
	return fileType == FileTypeExcel ||
		contentType == "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet" ||
		contentType == "application/vnd.ms-excel" ||
		strings.Contains(contentType, "excel") ||
		strings.Contains(contentType, "spreadsheet")
}

// Handle processes Excel spreadsheet content
func (h *ExcelHandler) Handle(ctx *agentContext.Context, info *Info, capabilities *openai.Capabilities, uses *agentContext.Uses, forceUses bool) (*Result, error) {
	// TODO: Implement Excel handling
	// 1. Extract data from .xlsx or .xls file
	// 2. Convert to text format (e.g., CSV-like or structured text)
	// 3. Handle multiple sheets
	// 4. Return Result with formatted text
	return nil, fmt.Errorf("not implemented")
}

// extractExcelText extracts text from Excel file
func extractExcelText(data []byte, contentType string) (string, error) {
	// TODO: Implement Excel text extraction
	// Handle both .xls (old format) and .xlsx (new format)
	// Consider using libraries like:
	// - github.com/360EntSecGroup-Skylar/excelize for .xlsx
	// Format output as readable text or CSV
	return "", fmt.Errorf("not implemented")
}

// formatExcelAsText formats Excel data as readable text
func formatExcelAsText(sheets map[string][][]string) string {
	// TODO: Format multiple sheets into readable text
	// Include sheet names, headers, and data
	return ""
}
